360 crank strengths

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abdywgn

abdywgn

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Please correct me anywhere in this thinking: stock 360 cast crank,AAWJ(?);next up the later in strength would be the 4-bbl. 4-speed CFD cast crank; aftermarket cast crank would be equal to(?) factory forged 5140 crank and 4340 is top of the line...not including billet crank. IF these assumptions are correct, and given proper tuning and no detonation,proper clearances,sun shinning and no water in the oil pan,what are each of these cranks able to handle HP-wise? To make things even,say 6500 is the maximum rpm the engine will see. Looking forward to discussion/answers.Thanks! Bob
 
I think all of the cast cranks are the same strength. The AAWJ casting has been rumored to mean something special on everything it was ever cast on. Heads, blocks, cranks, whatever. I will say this. Chrysler didn't use cast iron on their cranks. They used nodular iron. That's a little different animal and stronger than cast iron. Generally speaking a Chrysler iron crank can withstand 600 HP properly prepped and balanced good. But as far as one being "better" than the other due to markings I believe is bench racing talk.
 
I've run my stock crank (out of a '77 van engine) with 450 HP up to 7K without a problem. I've never even seen anyone break one. I guess it happens in extreme cases, just never seen it with a 360 crank.
 
600 is what is published limits on a cast crank on Eagles website, take it for whats thats worth to you, but there is that question: who has broken a 360 cast crank and at what HP? I thought AAWJ was on most every large cast Mopar part?
 
Any Mopar crank will take what you can give it (within reason)... no need to go aftermarket.

And just because a seller sez it's a 4340 crank can you be sure it really is? Easy to make a claim but machine shops can tell you they see some 4340 cranks machine much easier than others. All cranks are not equal.
 
pishta said:
600 is what is published limits on a cast crank on Eagles website, take it for whats thats worth to you, but there is that question: who has broken a 360 cast crank and at what HP? I thought AAWJ was on most every large cast Mopar part?
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It's on my 906 heads. It's on both my 400 cast cranks. It's on one of my 400 blocks. It's on ALL of the big parts on ALL THREE of my slant sixes. lol
 
Thanks everybody! The CFD casting was supposedly from GM...Pontiac? maybe. All good to know,see no reason to replace factory unit unless I drop and break it.
 
Weird, 'CFD' cranks were cast by GM for Mopar..and Ford, and even AMC....GM Central Foundry Division, Tilton Il.
 
Ford sold T&C three speeds to GM for 442, GTO and Gran Sports.

Lots of GM steering pumps and steering boxes in Ford and Mopars.

Packard used GM Hydramatics.

AMC bought parts from everybody.
 
The CDF and AAWJ are just castings from different foundries and nothing more. One is no stronger than the other. I have no clue how this got started but it's just not true. Probably from some Chevy guy whose crank withstood 300 horse power when he said he had 650. Nodular iron is nodular iron.
 
Herb McCandless told me he had yet to see a stock 360 crank fail. He was walking me thru a W2 solid roller 360 build.

My brother just bought a 69 Firebird 350 3sp car. Ford supplied those 3 speeds and is said to be stronger than the Muncies.He pplans on racing the pure stock series.
 
mbaird said:
Herb McCandless told me he had yet to see a stock 360 crank fail. He was walking me thru a W2 solid roller 360 build.

My brother just bought a 69 Firebird 350 3sp car. Ford supplied those 3 speeds and is said to be stronger than the Muncies.He pplans on racing the pure stock series.
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IMO, the A230 Mopar three speed is stronger than any of the Muncies. Even the M22.
 
Hey Bob, I wouldn’t worry a bit. Your biggest choice or concern really is will it be internal or externally balanced.
Ether way, I’ve had my stock 360 external balance cranks rev to 6700 without issues ever.

abdywgn said:
Please correct me anywhere in this thinking: stock 360 cast crank,AAWJ(?);next up the later in strength would be the 4-bbl. 4-speed CFD cast crank; aftermarket cast crank would be equal to(?) factory forged 5140 crank and 4340 is top of the line...not including billet crank. IF these assumptions are correct, and given proper tuning and no detonation,proper clearances,sun shinning and no water in the oil pan,what are each of these cranks able to handle HP-wise? To make things even,say 6500 is the maximum rpm the engine will see. Looking forward to discussion/answers.Thanks! Bob
Click to expand...
 
[


AMC bought parts from everybody.[/QUOTE]

It's going into an AMC...not just the crank but the whole driveline. It's my "what if" car.
 
C011A3AE-57B7-425A-B11B-DDBD2FBF5AC3.jpeg
94A72F6B-BB82-4DEF-B4FB-DD8D218CF92F.jpeg
1020’s-10.30’s in my sons 3200 pound Duster with a stock 360 externally balanced crank. Nice beefy radius on these stock cranks
 
abdywgn said:
Hooker 5204 1-3/4" headers? or another type that runs the #1 straight down and back?
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Hedmen 1 7/8. We both run them. I rerouted a couple tubes on the passenger side to give me more diaper room. My son modified his with a 4 pound hammer. Lol
EB4F3403-F542-4843-8183-4A75A579F92C.jpeg
 
Krooser said:
Any Mopar crank will take what you can give it (within reason)... no need to go aftermarket.

And just because a seller sez it's a 4340 crank can you be sure it really is? Easy to make a claim but machine shops can tell you they see some 4340 cranks machine much easier than others. All cranks are not equal.
Click to expand...

Excellent analogy !
Rarely if EVER are factory Chrysler cranks broke , and far superior versus
Any offshore China junk .
2 things not to buy from China
Condoms & Cranks
 
Your right! There condoms are working by evidence of there population.....

:rofl:
 
1Badcolt said:
Excellent analogy !
Rarely if EVER are factory Chrysler cranks broke , and far superior versus
Any offshore China junk .
2 things not to buy from China
Condoms & Cranks
Click to expand...


So are you including K1, Eagle, Scat, Ohio Crankshaft, 440source, and all the other FORGED cranks in this statement???
 
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